Was Avner Greif right about the Maghribi traders?

Jeremy Edwards and Sheilagh Oglivie write:

Economists draw important lessons for modern development from the medieval Maghribi traders who, according to Greif, enforced contracts multilaterally through a closed, private-order ‘coalition’. We show that this view is  untenable. The Maghribis used formal legal mechanisms and entered business associations with non-Maghribis. Not a single empirical example adduced by Greif shows that any ‘coalition’ actually existed. The Maghribis cannot be used  to argue that the social capital of exclusive networks will facilitate exchange in developing economies. Nor do they provide any support for the cultural theories of economic development and institutional change for which they have been mobilised.

Here is the paper, which if it is correct amounts to a stunning refutation of what was once a seminal contribution to economic history and the theory of social norms.  Thanks to a loyal MR reader for the pointer.


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